i have used the transmission for the divorced transfer case 4x4's before.
the ones i have done, and the two on the shelf, are from small blocks.
i used the tail shaft and housing, plus related parts, in a big block case, and that worked good.
in fact, i was going to use one of those transmissions plus a gearvendors unit in my 33 dodge humpback panel truck [the "eternal project"] until i found out gearvendors wouldn't sell you the adapter housing and the splined coupler unless you sent in those parts PLUS the money for the parts i needed to couple a chevy unit to my transmission ! [i had a deal going on a used chevy piece]
now why is THAT necessary ? what do they do with MY parts ? rip off someone else that needs a chevy coupler and housing adapter ?
not on MY dime !